It is technically a springer but the Giss system makes it re-coilless. The one problem with the Giss system is that the 'original' (get it? ) piston seals, in both rifle and pistol, degrade with age.
Dave Mercer (DM80 on here ) can replace them while hes eating his tea and watching East Enders. Whether you trust someone who watches Eat Enders with your rifle is up to you.
ATB
Ian
Founder & ex secretary of Rivington Riflemen.
www.rivington-riflemen.uk